Lap Joint Flange

ASME B16.5 Stub End Flange and Stainless Steel Loose Flange manufacturer in India

A flange acts as a device which connects and strengthens the existing piping system. A Lap Joint Flange consists of a 2 step assembly. The lap joint ring and a stub end which are attached to it to complete the flange. These flanges are highly resistant to corrosion and oxidation in different environments. In the Stub End Flange, the fittings can act as a replacement for welded flanges. These flanges provide support to the overall system and fullfill the requirements of backup rotating flanges. The Stainless Steel Lap Joint Flange can easily suffice in stress-induced environments where oxidants and reducers are at their peak. These joints possess superior strength and can be used in several high-pressure applications. All the Lap Joint Pipe Flanges can be slid on the pipe and attached similar to a slip-on flange. After welding, the stub end, the flange can be easily moved in different directions. The Stub End Lap Joint is a preferred choice in piping systems that require to be frequently dismantled and inspected. Its quick butt hole alignment allows it to be used in difficult piping configurations and large diameter pipes. The Lap Joint Flange Stub End possesses good mechanical properties in all conditions. Apart from this, they have good thermal stability and are very easy to work with. We are the leading Lap Joint Flange manufacturers in India. We thrive to produce high-quality products at the most reasonable prices.

Loose Flanges

The Carbon Steel Lap Joint Flange is made with high carbon concentrations. As a result, they possess good strength and high ductility. They can be easily rotated which, enables them to be fitted easily in butt-holes. The Lap Joint Flange Types go by different names namely back up flanges, loose ring flanges, loose hubbed flanges, and van stone flanges, and so on. For the Loose Flange Jointa weld is applied on the end of the pipe. This enables these flanges to possess a half or full flanged coupling. These flanges allow different types of pipe fittings to be fitted on them with ease. The Stub End With Backing Flange is suitable for pressures classes from class 150 to class 2500. These flanges are available in standard sizes between 15NB to 1200NB. Our experienced workers produced all our products including, the Flange With Stub End following, all international and national standards. They make use of the latest technology and best raw materials while producing the best products in the market.

Lap Joint Flange Connection doesn’t come in contact with, the fluids enabling them to suffice for long periods. Furthermore, they can be recycled if they get damaged or worn after long years of service. The Stub End With Flange possesses good workability and can be machined easily. These flanges consist of two parts which enable cost-cutting in cases when one part is damaged. A Steel Lap Joint can be welded via a fillet weld. These flanges are fastened together to create a strong flush surface. They can be galvanized or annealed for better protection. All our Lap Flange Joint can be custom designed in different shapes, sizes, and chemical make-up as per the requirements of our clients. If you have any questions or want to know more about our products or the LJ Flange, contact us for more information.

Manufacturer of Carbon Steel Lap Joint Flange and ASTM A105 Loose Flange Joint in RTJ Type, Flat/ Raised Face

Lap Joint Flange Specification

Check ANSI / ASME B16.5 Alloy Steel A182 F11 Flange With Stub End and ASTM A350 LF2 Lap Flange Joint pressure rating chart and dimensions

Size: 1/2" (15 NB) to 48" (1200NB)

Standards: ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings

Pressure Ratings: Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc.

Carbon Steel Loose Flanges/ Loose flange for stub end Flanges: ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8

Stainless Steel Loose Flanges/ Loose flange for stub end Flanges: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L

Alloy Steel Loose Flanges/ Loose flange for stub end Flanges: ASTM A182 F1, F5, F9, F11, F22, F91

Special Alloy Loose Flanges/ Loose flange for stub end Flanges: Duplex, Super Duplex, Nickel Alloys

Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Coating/Surface Treatment: Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized

Value Added Services: CNC Machining, Customised Flanges

GB9112-9131,SH3406,ANSI B16.5 ,DIN25762766,DIN2632-2638

from 150lbs to 2,500lbs.


Carbon steel, stainless steel and alloy steel.

Carbon steel and alloy steel with yellow print, black print, oil or zinc.


Lap Joint Flanges

Lap Joint Flanges

Lap Joint Pipe Flanges Key Features

Manufacturer and exporter of UNS S31803 Duplex Stub End with Backing Flange and Titanium LJ Flange in Class 150 Lb, 300 Lb, 400 Lb, 600 Lb, 900 Lb, 1500 Lb and 2500 Lb accordance to ANSI/ ASME B16.5

* Proven million of times as a standard flange
* Low - weight
* Optimised “one-man fitting”
* Reduced installation costs
* No loose parts 
* Homogenous introduction of flange forces
* Minimised leakage rates
* High residual torques after thermal stress

Stainless Steel Lap Joint Flange Dimension Standards

Manufacturer of SS 304 Loose Flange and 316 Stainless Steel Lap Joint Flange as per JIS/ DIN/ BS /EN standards in Mumbai, buy Nickel Alloy Stub End Flange and Super Duplex LJ Flange at low price in India

ANSI B16.5
Class 150lbs, Class 300lbs
Class 600lbs, Class 1500lb